“for about ten minutes; and then, in the most tremendous, unearthly screech I ever heard, it recommenced from the south and south-west.” The third hurricane of the year was met with by the Rawlins, about midnight of the 18th of August, when, after blowing violently for twelve hours from the north, in an instant a perfect calm ensued for an hour, and then, quick as thought, the wind sprung up with tremendous force from the south-west, no swell whatever preceding the convulsion. During this hurricane, an extraordinary phenomenon presented itself, resembling a _solid, black, perpendicular wall_ about 15° or 20° above the horizon, which disappeared and became visible again several times, described by one of the observers, as “the most appalling sight he had ever seen during his life at sea.” A similar spectacle is described by an officer on board the ship Tartarus, during a hurricane on the American coast in the year 1814:—“No horizon appeared, but only a something resembling an _immense wall_ within ten yards of the ship.” The power of the wind was remarkably exemplified during the great hurricane of 1780, which at Barbadoes forced its way into every part of the Government-house, and tore off most of the roof, though the walls were three feet thick, and the doors and windows had been well barricaded. Obliged to retreat from thence, the governor and his family fled to the ruins of the foundation of the flag-staff, and, compelled to relinquish that station, they with difficulty reached the cannon of the fortifications, under the carriages of which they took shelter. But here they were not secure, for the cannons were moved by the fury of the wind, and they dreaded every moment that the guns would be dismounted, and crush them by their fall. From the preceding accounts it appears that the agency of electricity is frequently extensively developed in hurricanes; that they have a progressive motion; that calms of short duration occur during their continuance; after which the wind bursts forth from a quarter different to that from which it has been blowing—peculiarities which have led to a theory respecting storms which may be considered as established in its leading principles.